Cleaning a vintage Hermes silk scarf

Nora Dolan
by Nora Dolan
It's mostly cream, with blue and gold accents. It's dingy-looking and has some moderate water stains. Dry cleaning is out, it can ruin the colours, (unless it's chemical-free, hard to find and expensive). I am afraid to hand-wash this treasure, it's well over 50 years old. Any advice will, as always, be greatly appreciated.
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